21411572

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{997}}^1$

素因数の和:1080

約数の個数: 48

約数和(自身を含む): 46945920

約数和(自身を除く): 25534348

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 59, 91, 118, 182, 236, 364, 413, 767, 826, 997, 1534, 1652, 1994, 3068, 3988, 5369, 6979, 10738, 12961, 13958, 21476, 25922, 27916, 51844, 58823, 90727, 117646, 181454, 235292, 362908, 411761, 764699, 823522, 1529398, 1647044, 3058796, 5352893, 10705786, 21411572]

約数ペア:

[(1, 21411572), (2, 10705786), (4, 5352893), (7, 3058796), (13, 1647044), (14, 1529398), (26, 823522), (28, 764699), (52, 411761), (59, 362908), (91, 235292), (118, 181454), (182, 117646), (236, 90727), (364, 58823), (413, 51844), (767, 27916), (826, 25922), (997, 21476), (1534, 13958), (1652, 12961), (1994, 10738), (3068, 6979), (3988, 5369)]